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// Copyright 2006-2008 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef V8_BOOTSTRAPPER_H_
#define V8_BOOTSTRAPPER_H_
namespace v8 {
namespace internal {
class BootstrapperActive BASE_EMBEDDED {
public:
BootstrapperActive() { nesting_++; }
~BootstrapperActive() { nesting_--; }
// Support for thread preemption.
static int ArchiveSpacePerThread();
static char* ArchiveState(char* to);
static char* RestoreState(char* from);
private:
static bool IsActive() { return nesting_ != 0; }
static int nesting_;
friend class Bootstrapper;
};
// The Boostrapper is the public interface for creating a JavaScript global
// context.
class Bootstrapper : public AllStatic {
public:
// Requires: Heap::Setup has been called.
static void Initialize(bool create_heap_objects);
static void TearDown();
// Creates a JavaScript Global Context with initial object graph.
// The returned value is a global handle casted to V8Environment*.
static Handle<Context> CreateEnvironment(
Handle<Object> global_object,
v8::Handle<v8::ObjectTemplate> global_template,
v8::ExtensionConfiguration* extensions);
// Detach the environment from its outer global object.
static void DetachGlobal(Handle<Context> env);
// Reattach an outer global object to an environment.
static void ReattachGlobal(Handle<Context> env, Handle<Object> global_object);
// Traverses the pointers for memory management.
static void Iterate(ObjectVisitor* v);
// Accessor for the native scripts source code.
static Handle<String> NativesSourceLookup(int index);
// Tells whether bootstrapping is active.
static bool IsActive() { return BootstrapperActive::IsActive(); }
// Support for thread preemption.
static int ArchiveSpacePerThread();
static char* ArchiveState(char* to);
static char* RestoreState(char* from);
static void FreeThreadResources();
// This will allocate a char array that is deleted when V8 is shut down.
// It should only be used for strictly finite allocations.
static char* AllocateAutoDeletedArray(int bytes);
// Used for new context creation.
static bool InstallExtensions(Handle<Context> global_context,
v8::ExtensionConfiguration* extensions);
};
class NativesExternalStringResource
: public v8::String::ExternalAsciiStringResource {
public:
explicit NativesExternalStringResource(const char* source);
const char* data() const {
return data_;
}
size_t length() const {
return length_;
}
private:
const char* data_;
size_t length_;
};
}} // namespace v8::internal
#endif // V8_BOOTSTRAPPER_H_
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